Posted by **Jen ** on Saturday, October 31, 2009 at 3:17pm.

A 125 kg fullback is running at 5.0 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west.

a) Calculate the original momentum of the fullback.

i did this and got 625 kg- m/s

b) Calculate the impulse exerted on the fullback

i did this and got 625

(c) Calculate the impulse exerted on the tackler.

I did this and got 625 but D I CANT FIGURE OUT !!!

(d) Calculate the average force exerted on the tackler.

- Physics -
**bobpursley**, Saturday, October 31, 2009 at 3:19pm
d) force*time=changeinmomentum

since you dont have time of impact, you cant do it.

other answers: momentum and impulse are vectors, you didn't indicate direction.

- Physics -
**John**, Wednesday, February 27, 2013 at 2:53pm
Since the unit for force, a newton is equal to kg*m/s^2 you must divide the momentum, kg*m/s of the player by the time it took for him to be tackled.

## Answer this Question

## Related Questions

- physics - A 95 kg fullback is running at 7.5 m/s to the east and is stopped by a...
- physics - A 89.0 kg fullback running east with a speed of 5.00 m/s is tackled by...
- Physics - A 79.0-kg fullback running east with a speed of 4.00 m/s is tackled by...
- PHYSICS HELP! - An 88.5 kg fullback moving east with a speed of 5.5 m/s is ...
- Physics URGENT!!! - A 75.0 kg fullback running east with a speed of 6.00 m/s is ...
- physics - In a football game, a receiver is standing still, having just caught a...
- Physics - Runner A is initially 2.4 km west of a flagpole and is running with a ...
- Physics - Runner A is initially 2.4 km west of a flagpole and is running with a ...
- physics - An 87.0 kg fullback moving east with a speed of 5.0 m/s is tackled by ...
- Physics URGENT!!! - A 91.0 kg fullback running east with a speed of 6.00 m/s is ...

More Related Questions